PVD-TiAlN (Titanium Aluminium Nitride) Coating
PVD-TiAlN coating: 80-180 h protection with excellent hot hardness for high-temperature fasteners and hot-work tooling.
| Finish Code | TZ016 |
|---|---|
| Environmental Grade | Vacuum PVD process; clean and pollution-free. RoHS compliant |
| Salt Spray Standard | 80-180 h; closely tied to substrate quality |
| Appearance / Colour | Violet-grey to bronze |
| Suitable For | High-temperature precision fasteners, hot-work mould components, hot-environment moving parts |
| Features | Hot hardness; wear resistant |
| Environmental Compliance | REACH and RoHS compliant |
Overview
Surface finishing on a fastener is a functional coating, not a cosmetic one: it sets the friction coefficient that determines how much of the applied torque becomes clamp load, and it defines how long the part survives in a corrosive environment. Two finishes that look identical can differ by a factor of several in salt-spray hours and by enough in friction to change the torque specification. This listing: finish code TZ016, salt spray 80-180 h, appearance / colour Violet-grey to bronze, environmental compliance REACH and RoHS compliant.
What sets this listing apart: Features Hot hardness; wear resistant; Salt Spray Standard 80-180 h.
Advantages
Barrier coatings protect the base metal, while sacrificial coatings protect the steel even at a scratch; the choice depends on whether the joint will be damaged in service.
Hydrogen embrittlement risk separates processes: electroplating on high-strength steel needs a de-embrittlement bake, while mechanical and flake coatings avoid the risk entirely.
Friction coefficient changes with coating: a zinc-flake coating typically runs lower and more consistently than electroplated zinc, which is why torque tables are finish-specific.
Applications
Automotive underhood and body joints, outdoor equipment, marine and coastal installations, electronics hardware, and any joint where the torque specification is tied to a friction value.
Quote the standard, the hours and the acceptance criterion together — a salt-spray figure without the test method is not a specification. Check that the coating process is compatible with the core hardness of the part.
Product information is supplied by Toprecision. Custom parts can be produced to drawing — contact us for samples or a quotation.
Specifications across this series
6 parts in this series
| Part | Finish Code | Environmental Gr… | Salt Spray Stand… | Appearance / Col… |
|---|---|---|---|---|
| DLC Diamond-Like Carbon Coating · TZ011 / Vacuum deposition; no waste-liquid discharge. RoHS compliant / 200-500 h; film system can be tuned on request | TZ011 | Vacuum deposition; no waste-liquid discharge. RoHS compliant | 200-500 h; film system can be tuned on request | Dark grey to black |
| PVD-TiN Titanium Nitride (Gold PVD) · TZ014 / Vacuum PVD process; pollution-free. RoHS compliant / 48-160 h; depends on substrate quality | TZ014 | Vacuum PVD process; pollution-free. RoHS compliant | 48-160 h; depends on substrate quality | Gold |
| PVD-CrN (PVD) · TZ015 / Vacuum PVD process; clean and pollution-free. RoHS compliant / 80-200 h; improved by suitable pre-treatment | TZ015 | Vacuum PVD process; clean and pollution-free. RoHS compliant | 80-200 h; improved by suitable pre-treatment | Silver-grey |
| PVD-TiAlN Titanium · TZ016 / Vacuum PVD process; clean and pollution-free. RoHS compliant / 80-180 h; closely tied to substrate quality | TZ016 | Vacuum PVD process; clean and pollution-free. RoHS compliant | 80-180 h; closely tied to substrate quality | Violet-grey to bronze |
| PVD- DLC Diamond-Like Carbon Coating · TZ017 / Vacuum PVD deposition; clean and pollution-free. RoHS compliant / 200-500 h; film stack can be customised | TZ017 | Vacuum PVD deposition; clean and pollution-free. RoHS compliant | 200-500 h; film stack can be customised | Dark grey to black |
| PVD Coating (PVD Hard Film) · TZ305 / REACH / RoHS compliant / Not applicable (functional coating) | TZ305 | REACH / RoHS compliant | Not applicable (functional coating) | Silver, gold, black or custom colours |
Values are taken from each part’s own attribute set. Changing length, material or finish changes pull-out strength and installation torque, so compare the row that matches your drawing.
Selection and test data: engagement length, standards, salt-spray hours
FAQ
What does this finish provide?
Finish Code TZ016, Environmental Grade Vacuum PVD process, Salt Spray Standard 80-180 h, Appearance / Colour Violet-grey to bronze.
How does it affect torque and friction?
Aluminium Alloy.
What should I verify before ordering or installing it?
Quote the standard, the hours and the acceptance criterion together — a salt-spray figure without the test method is not a specification. Check that the coating process is compatible with the core hardness of the part.